View the image of the structure of skeletal muscle. Label the parts of the skeletal muscle.

a

b

e

d

c

muscle

tendon

fascicle

myofibril

muscle fiber

Tags

NGSS.MS-LS1-2

Which of the following is a flat and wide connective tissue that connects the muscles to the bones?

• endomysium

• myofibril

• aponeurosis

• tendon

Which of the following describes the sarcolemma?

• dense outer layer of connective tissue that surrounds the entire muscle tissue

• connective tissue that surrounds groups of 10 to 100 or more muscle fibers

• specialized plasma membrane that surrounds each muscle fiber

• cytoplasm of the muscle fiber

Which of the following is the layer of connective tissue that covers every single muscle fiber?

• perimysium

• sarcoplasm

• epimysium

• endomysium

Your bicep muscle is attached to the scapula at one end and the radius at the other. When you contract the bicep muscle, the scapula remains stationary, while the radius, a bone of your forearm, moves. Which of the following statements about the origin and insertion of the bicep muscle is true? Select all that apply.

• Origin of the muscle is the end attached to the scapula

• Insertion of the muscle is the end attached to the scapula

• Origin of the muscle is the end attached to the radius

• Insertion of the muscle is the end attached to the radius

Match the types of muscles based on their role with their definition.

• synergist

• muscle that contracts to enable the movement of a body part

• fixator

• muscle that assists the prime mover by stabilizing the origin of the prime mover

• antagonist

• muscle that relaxes during contraction, allowing the movement of the joint

• agonist

• muscle that assists the muscle movement of the agonist muscle in a supportive role

Which of the following movements describes the bending of the knees when you squat?

• extension of the leg

• adduction of the leg

• abduction of the leg

• flexion of the leg

Which of the following is an example of circumduction?

• stretching out the hands to the side

• turning the head to look back at someone

• waving the hand to greet someone

• bending the knee when squatting

Tags

NGSS.MS-PS2-1

Which of the following movements involves turning of the bone around its axis?

• circumduction

• rotation

• abduction

• adduction

Tags

NGSS.MS-PS2-1